Question

How many bricks each 25cm long, 10cm wide and 7.5cm thick, will be required for a wall 15m long, 2.5m high and 1.25m thick.

Answer 1

Given:-

• A wall of demension = 15m*2.5*m *1.25m

• A brick has demension = 25cm* 10cm*7.5cm

To Prove:-

• How many bricks required for the wall [Volume]

Solution :-

We are given with a Question to find out the Volume of the Cuboidal Wall. This Can be solved by the following way.

• At first We will Find the Volume of the wall

• Since Length, Breadth and Heigjt are given we can apply the formula to find the volume of the Cuboidal wall.

• Volume of cuboid = Length*Breadth*Height

• Volume = 15*2.5*1.25m3

• Volume = 46.875 m3

Now Let us find the volume of a Brick

• Volume of a brick = L*B*H

• Volume = 0.25*0.1*0.75 ( we had converted Cm - meteres by Dividing it by 100 )

• Volume of a brick = 0.01875m3

Now,

• Let us find how many Bricks can be filled on the wall

• To find out we should divide the Volume of Wall by the Volume of Brick

• =>. 46.875/0.01875 bricks

• => 2,500 Bricks

$\sf{ \red{</strong><strong>S</strong><strong>o \: </strong><strong>H</strong><strong>ence \: 2500 \: </strong><strong>B</strong><strong>ricks \: are \: </strong><strong>Needed</strong><strong>.</strong><strong>}{} }{}$

Answer 2

Question :-

• How many bricks each 25cm long, 10cm wide and 7.5cm thick, will be required for a wall 15m long, 2.5m high and 1.25m thick.

Answer:-

We are given with two conditions

• First is to Find the Volume of Brick and Wall.

• Second one to find the Number of Bticks which would fit On the wall.

Given:-

• The Length, Breadth and Height of the wall = 15,2.5 and 1.25 Meteres.

• The Length and the Breadth of the Brick =25,10 and 7.5 cms

To Find :-

• The Number of Brucks whichbwould fit on the wall.

Solution:-

Let us find the Volume of a cuboudal brick = Length * Breadth * Height =0. 25 *0.1 * 0.75 meter 3 [ we made the cm to m by dividing 100]

• So the Volume of Brick = 0.01875m3

The Volume of the wall = 15*2.5*1.25 = 46.875 m3

Now,

The Number of Bricks would fit on the wall = Volume of Wall / Volume of Brick

$\sf{ \underline{ \red{ \frac{46.875}{0.01875 \: } = 2500 \: bricks}{} }{} }{}$

The number of bricks = 2500